Built in.Your TV would need to have HDMI CEC compatibility for the aTV remote to be able to adjust the volume. It's called Anynet+ on Samsung TVs. It's possible not all the HDMI inputs on the telly will be CEC compatible.
EDIT: Just realised that's not even true, it should be able to use IR.
Are you using a soundbar/external speakers or just the built-in ones?
Strange why my old Roku just worked.And have you followed the instructions here: https://support.apple.com/en-gb/guide/tv/atvbbe2477c9/tvos
I had this happen yesterday after an LG WebOS update & I unplugged ethernet and power cables and replugged for my AppleTV & that fixed it for me.ATV remote cant adjust volume on Samsung TV. Is this normal behavior?
I did not connect my Smart TV to the internet. I would buy a non smart TV if they were still sold.I had this happen yesterday after an LG WebOS update & I unplugged ethernet and power cables and replugged for my AppleTV & that fixed it for me.
Thanks.. I have allot to try when I get off work.try unplugging and re-plugging both ends of the HDMI cable
try unplugging and replugging both the TV and aTV from power.
Both of those cause your devices to re-do their handshake, it's possible that something got corrupted or lost.
Try a different HDMI cable, CEC has its own pin/wire in the connector/cable, I've had a cable that was intermittent for CEC, but worked fine for everything else. Sometimes moving the cable would make it work, Sometimes not,
make sure CEC is enabled on your TV, sometimes it's off by default. Samsung calls it anynet+
Use Anynet+ on your TV or projector
Control external devices that are connected to your TV, Odyssey Ark, or projector with HDMI using your remote. Learn how to use Anynet+.www.samsung.com
That fixed it thanks!!! I hope this does not happen again.This happens to me many times. You need to press and hold both the TV button and the minus button for at least 5 seconds or until the remote is disconnected. It won't be reset, just disconnected.
Press any button to connect the remote again.